Nonstop flight route between Perth, Western Australia, Australia and Helena, Montana, United States:

About this route:

A direct, nonstop flight between Perth Airport (PER), Perth, Western Australia, Australia and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 9,728 miles (or 15,656 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Perth Airport and Helena Regional Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Perth Airport and Helena Regional Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Perth Airport (PER):

• Because of Perth Airport's relatively low elevation of 67 feet, planes can take off or land at Perth Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• The closest airport to Perth Airport (PER) is Jandakot Airport (JAD), which is located only 12 miles (19 kilometers) SSW of PER.
• Perth Airport (PER) has 2 runways.
• In 2001, after the financial collapse of Ansett Airlines, the Ansett terminal became a multi-user terminal, catering for flights from former Ansett-subsidiary Skywest, as well as Virgin Australia and now charter airlines including Alliance Airlines and previously Strategic Airlines.
• Passenger numbers have trebled in the past 10 years with more than 12.6 million people travelling through the airport in 2012.
• Site selection and preparation of the original plans was undertaken by Mr N M Fricker of the Department of Civil Aviation.
• The move was agreed to by the government of the day, as the larger types of aircraft of the day being operated by the two airlines could simply not be handled at Maylands, notwithstanding the small grass airfield, lack of passenger facilities, and approaches being difficult due to surrounding industrial infrastructure.
• Perth Airport handled 13,664,394 passengers last year.
• The furthest airport from Perth Airport (PER) is L.F. Wade International Airport (BDA), which is nearly antipodal to Perth Airport (meaning Perth Airport is almost on the exact opposite side of the Earth from L.F. Wade International Airport), and is located 12,389 miles (19,938 kilometers) away in Ferry Reach (near Hamilton), Bermuda.
• In 1948, the Horrie Miller owned MacRobertson Miller Aviation Co.
• In 1960, the current international terminal previously constructed from steel and cladding from Manus Island was dismantled and then re-erected in the suburb of Cannington.

Facts about Helena Regional Airport (HLN):

• The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
• In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
• Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
• Helena Regional Airport (HLN) has 3 runways.
• The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 85,649 passenger boardings in calendar year 2008, 88,314 in 2009 and 98,193 in 2010.
• The furthest airport from Helena Regional Airport (HLN) is Sir Gaëtan Duval Airport (RRG), which is located 10,563 miles (17,000 kilometers) away in Rodrigues Island, Mauritius.